Measurement and dephasing of a flux qubit due to heat currents
| Autor: | Fabian Hassler, Janine Splettstoesser, Samuele Spilla |
|---|---|
| Přispěvatelé: | SPILLA, S, HASSLER, F, SPLETTSTOESSER, J |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Superconductivity
Josephson effect Physics Flux qubit Quantum Physics Heat current Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Dephasing General Physics and Astronomy FOS: Physical sciences Settore FIS/03 - Fisica Della Materia Temperature gradient Computer Science::Emerging Technologies SUPERCONDUCTIVITY QUBIT THERMAL CURRENT THERMAL DEPHASING Qubit Condensed Matter::Superconductivity Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Quantum Physics (quant-ph) Coherence (physics) |
| Zdroj: | The new journal of physics 16, 045020 (2014). doi:10.1088/1367-2630/16/4/045020 |
| Popis: | We study a flux qubit, made of a superconducting loop interrupted by three Josephson junctions, which is subject to a temperature gradient. We show that the heat current induced by the temperature gradient, being sensitive to the superconducting phase differences at the junctions, depends significantly on the state of the qubit. We furthermore investigate the impact of the heat current on the coherence properties of the qubit state. We have found that even small temperature gradients can lead to dephasing times of the order of microseconds for the Delft-qubit design. 19 pages, 6 figures, published version |
| Databáze: | OpenAIRE |
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